According to research published in the Journal of the Academy of Nutrition and Dietetics, there is no evidence that a gluten-free diet provides health benefits to the general population and is not an effective weight-loss method. In fact, there is some research that shows that BMI often increases in overweight or obese patients with celiac disease that follow a gluten-free diet.

Research also suggests that gluten found in grains, especially in wheat, may have health benefits such as blood pressure control and health of the gut and immune system.

The bottom line is that there is no evidence to justify a gluten-free diet for individuals who do not have celiac disease or gluten sensitivity.

Source: http://www.andjrnl.org/article/S2212-2672(12)00743-5/fulltext